ok, i've been trying to make an application that:
1. user selects a text file through a open file dialog
2. content of text file is displayed in a textbox
3. user clicks a button with the caption "filter"
4. then the program will filter out everything apart from rapidshare.com links
i've got up to step 3 but i can't seem to figure out how to filter everything apart from rapidshare links from the text box, any help is appreciated, thanks in advanced.